Trailer-truck frame for locomotives.



B. V. H. JOHNSON & O. T. WBSTLAKB.

TRAILER TRUCK FRAME FOR LOCOMOTIVES.

APPLICATION TILED FEBA, 1914.

Patented June 9,1914.

2 sums-sum 1.

B. V. H. JOHNSON 8; C. T. WESTLAKE. TRAILER TRUCK FRAME FOR LOCOMOTIVES. APPLICATION FILED FEBA. 19H,

1 ()99,3'76 Patented June 9, 1914.

2 SHEETS-SHEET L.

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BODNE V. H, JOHNSON AND CHA RLES T. WESTLAKE, F ST. LOUIS, MISSOURI, ASSIGN- OBS TO DOUBLE BODY BOLSTER COMPANY, 013 ST. LOUIS, MISSOURI, A CORPORATION 01? NEW JERSEY.

TRAILER-TRUCK FRAME FOR LQCOMQTIVES.

Specification of Letters Patent.

Application filed February 4, 1914. Serial No. 816382,

To (ZZZ whom it may concern:

Be it known that we, Boone V. ll, JOHN mm and (.Imnmis 'l. \VES'I'LAKE, citizens ol: the United States, residing at the city oi St. Louis, State of Missouri, have invented a certain new and useful Improvement 1n "er-U f lia1lei-.l.1.iu.ll lmnncs ioi .ioconio nos, o which the following; is a full, clear, and exact description, such as will enable others skilled .in the art to which it appertalns to inalte and use the same, re'l'erence being had to the accompanying drawings, forming pa rt oi llllS spmufical ion, in whichlligure 1 is a plan view of a locomotive trailer truck frame of our improved construclion. l ig'. 2is a side elevational view or the truck frai'ne, the same be ng shown associated with a part of the lOCOmOtIVC lramc. Fig. 3 is a rear elevational view of our in'iprovcd trailer truck frame. l 4 is a front elcvalional view of the truck frame. Fig. 5 is a vertical section taken on the line 5 5 of Fig. 2. Fig. (i is a horimntal section taltcn on the line (3-45 of Fig. 2. Fig. 7 is a verti al section taken on the line 7--T of Fig. :2.-

Our invention relates to a trailer truck frame for lo .onmti\'es, (a, the frame of the truck which receives the trailer wheels and supports the locmnotive boiler to the rear of the back drivers.

The principal object of our invention is to tlorm a trailer truck frame in a single piece, preferably by casting, and to form integral with said frame various parts in the form of brackets and bearings, which latter are particularly designed to receive de vices necessarily associated with the trailer truck, such as 'thcair brake cylinder. brake hangers, brake lever fulcrums, pedestals, centering device, friction plates, front pivot and the like.

Il'ereto'fore in the construction of trailer truck frame for locomotives, it has generally been the practice to construct the frame in parts, and to assemble and fasten said parts to each other by means of rivets, bolts and like fastening devices, but such construction has many disadvantages for the reason that the strains and constant vibration developed while the truck is in service tends to loosen the joints between the assembled parts, thereby destroying the stability of the frame and the ahnement and position oi? the baring's and receive the Vzll'lUllS devices n Patented June 9, 191-1.

brackets which ecessarily assocoated with and carried by the truck frame.

It is the purpose ol. our invention t'o ovcrcome the objectionable features just mention by casting; the truck frame, buckets and hearings in one piece for by doing so we are able to produce a very strong, substantial striazturc which, 111 service, ellcctually resists all subjected, and-which is not constant vibration developed is in service;

A one piece casting can be the expenditure of considei strains to which it is ordinarily affected by the while the truck produced with and labor than a frame built up from a number ol structural shape united by bolts, rivels and th and castings e like, and necessarily the one piece structure has greater strength than a lalu'icaled it'r ame. "e have demo!istratcd in praclice that a trailer truck Weight, has much greater built up frame.

lranie cost 111 one piece, \v

Morcove r,

hile 01": lighter strength than a the one piece l l'fllllt has no joints to work loose, materially reduces maintenance cost and in. service tends to prevent excessive transverse movement ol nosingof the front portlon of the locomotive,

'1 ll 1 o lo a mac pmposcs our sists in certain novel fcatur invention cones of construclion and arrangement of parts, hereinafter more fully described and claimed.

As shown in the aceonn'nniyinc' drawings, our improved trailer truck f'anic includes a pair of side members 10 which are preferably box shape in cross section, and formed integral with the tops of these side members are plates 11 which serve as lion plate supporting bearings 12 bearings are fixed to the side any suitable manner and rec bases for fric- These members 10 in eive plano convex bearing disks 13 which serve'as bearings for brackets l lthat project downwardly the locomotive frame.

outwardly and from the side meinbcrs 15 of The side members 10 preferably converge toward their forward ends and uniting said forward ends is a transverse front end member 16 which is preferably arched. Formed integral with and projecting this forward bearing 17.

which pivotally connects th forwardly from and member is a bracket or This bracket receives the pin e trailer truck device and thnsisaid truck frame is yield frame to the locomotive framsaid pin be.- iug also mounted in a transverse member or transom 18 forming a part of the locomotive frame.

Formed integral with and projecting forv. wardly from the ends of the front end memher 16 are short brackets 19, and formed in the underside thereof are notches 20 which are adapted to receive keys seated in the lower ends of spring hangers. 21, the same forming hangers between the forward po rtion of'the truck frame, and the locomotive springs. The rear portions of the side members 10 are arched as designated by 22 to form the vertically disposed pedestals 23, and fixed in any suitable manner to the innor faces of these pedestals are liners or wear plates 24, between which the usual journal boxes are positioned.

The upper portions of the arches 22 are bifurcated or slotted lengthwise as desig-. nated by 25 in order to accommodate the springs which rest upon the trailer truck journal boxes. .The rear end of the side members 10 are united by an integral rail 26, the same being preferably of channel or I-beam shape in cross section, and formed integral with tliecentral portion and top of this rear rail horizontally disposed plate 27 which forms a suppo'rtirt base or bracket for the truck centering device 28.

This centering device is of the usual type,

employing a pair of spring pressed plungers operating in a suitable housing and the outer ends of which plungers normally bear against the inner faces of members 15 of the locomotive frame.

Movement of the truck frame. to one side or the other effects a compression of th springs behind the plungers of the centerin ingly held in central position with respect to the locomotive frame. I I I Formed integral with the central portion and underside of the rear rail 26 is a horizontally disposed plate or bracket29'which serves as a support and a point of attach- Y mont for the trailer truck brake cylinder 30.

Formed integral with the rear rail 26 and on the inside thereof are pairs of brackets 31, the same being adapted to receive the upper ends of brake hangers.

Formed integral with the rear ends of the members 10 and adjacent to the points where the same unite with the rear rail 26 are depen ding brackets 32 which serve as fulcrums "for the outer ends of brake levers 33. The

inner ends of the brake levers are connected in any suitable manner to the piston of the brake cylinder 30.

The space between the front member 16 and the trailer truck axle is free and open as shown in Fig. 1 for the accommodation of the depending portion of the locomotive ash pan.

A trailer truck frame of our improved construction is very strong, can be easily and cheaply prodrced inasmuch as it can be readily cast in a single piece, and by forming integral with said frame a number of essential brackets and bearings, much time, labor and consequent expense incident to the attaching of separate brackets and bearings is saved. l urthermore, the elimination of joints in the truck frame does away with structural weaknesses which invariably destructure is subjected to constant service strains and vibration.

It will be readily understood that minor changes in the size, form and construction of the various parts of our improved trailer truck may be made and substituted for those herein shown, and described, without departing from the spirit of our invention, the scope of which is set forth in the appended claims.

Ve claim:

1. As a new article of manufacture, a locomotive trailcr truck frame formed in a single piece, and comprising end members and side members, portions of which are arched to form edestals.

2. d locomotive trailer truck frame formed in, a single piece and comprising side membersfend members, and a brake cylin- I der bracket.

3;, A. locomotive trailer truck frame formed in a single piece and comprising side members, end members, a front pivot bear ing and brake hanger brackets.

I inks a new article of manufacture, a locotnotive trailer truck frame formed in a single plece and comprislng side, members,

jend members, and brake fulcrum brackets.

,5. A "locomotive trailer truck frame formed in a single piece and comprising end members and side members, portions of which are of inverted U-shape and the vertical legs of which inverted U-shaped portions constitute pedestals.

6. A locomotive trailer truck frame formed in a single piece and comprising side members, end members, and a centering device bracket.

7. As a new article of manufacture, a locomotive trailer truck frame formed in a single piece and comprising side members, end members,and friction plate supporting brackets. i l

8. As a new article; of. manufacture, a locomotive trailer truck frame formed in a single piece and comprising side members ends members, and a front pivot bearing.

9. As. a new article of manufacture,'-a locomotive trailer truck frame formed in a single. piece and comprising side members, end members, and forwardly projecting brackets which are notched to receive spring hanger keys.

velop where an assembled or fabricated I idiromotivc trailer truck :t'ramc iorn'icd in a sihg'ic piece and comprising: aido members, oad'mcmbcrs, and pcdcstais, tho uppcr poc tiooo of which are slotted to accommodato the springs which rest upon tho journalcd boxes positioned between said pedestais.

.' 1 a now article of manufacture, a

locomotive trailer truck framc formed in a single piccc and comprising side members, provided with inverted Ushapcd portiom ada atcd to form pedestals, the upper poi tions of which are slotted to receive. the aprioga which rest upon tho journal boxes positirmcd bctwcon said pcdcsta ta, and trans vol-cc mcmbcm connecting the coda of said side mcmbcres.

'55. id. locomotive traiicr truck frame caat in. a cinch) piccc and comprising aidc pieces hiring ia'i-czxtcd U-shapcd portions which .totc pcdcataisa, friction platesupportia'achcts on said :sidc mcmbcrs, a transmcmbcr uniting the forward ands oi. mid .-;idc mm'nhcrs, a front pivot bearing on said tiitIllWBl'Sfi member, a tranavcrsc membar connecting the roar portions of the side lm-mbciw-s, and a brake cylinder bracket on aaid rear transverse member.

1 -h A. locomotive trailer truck frame castin a aingg'ic piece and comprising side pieces having iYWBLilEt'i thsl'aapcd portions which constitute pcdcstais, friction pinto supportmg); bracirrts on said side members, a transverse member uniting the forward ends of said side members, a front pivot bearing on and transverse member, a'transvcrso mcm bur connecting the rear portions of tho side numbers, and brake hanger brackets on said roar transverse member.

'15. A irxromotivo trailer truck frame cast in a singio piece and comprising side pieces having invcrtcd U-ahaped portions which constitlltc pcdcslals, friction plate supporting brackets on said side members, a tram \wsc member uniting tilGfOlWfil'd, ems of said side members, a .t'ront pivot bearing on said transverse member, a transverse mombcr connecting thcrear portions of the side mcmhcrs, and brake lover fulcrum brackets on saidreur transverse member.

16. A. locomotive trailer trnck frame cast in a single piece and comprising side pier-cs having inverted U-shapcd portions which constitute pedestals, friction platc supporting brackets on said side mcmbcl's notchmi brarkcts on the forward cnds of said side nannbcra, which notched brackets arc adapted to receive Spring hanger ice-ya, a transremc mcmhcrhniting the forward ends of said side men'ibcrs, afront pivot bearing on amid transverse momhcr, a trans-verso mom bcr connecting the rear portions of the side members, and a brake cylinder bracket on said rear transverse member.

In testimony \vhcrcof We hereunto affix our signatures in the presence of two witlwssra, this 17th day of January, 191 1-.

BOONE V. H. JOHNSON. CHARLES '.l.. W ESTLAICE.

\Vitncsscs Farm 11. Bmmnaxnoaa, Dan C. BJCLLVILLE. 

